Source: The American Heritage® Dictionary of the English Language, Third Edition Copyright © 1996, 1992 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

wet-²
Important derivatives are: wether, veteran, inveterate, veterinary, veal.
Year.

 

1. Suffixed form *wet-ru-. wether, from Old English wether, wether, from Germanic *wethruz, perhaps “yearling.”
2. Suffixed form *wet-es-.
   1. veteran; inveterate, from Latin vetus, old (< “having many years”);
   2. veterinary, from Latin veternus, of beasts of burden, of cattle (perhaps chiefly old cattle);
   3. etesian, from Greek etos, year.
3. Suffixed form *wet-olo-. veal, vitellus, from Latin vitulus, calf, yearling.

[Pokorny et- 1175.]

 

Source: The American Heritage® Dictionary of the English Language, Third Edition Copyright © 1996, 1992 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

wether \Weth"er\, n. [OE. wether, AS. we[eth]er; akin to OS. wethar, withar, a ram, D. weder, G. widder, OHG. widar, Icel. ve[eth]r, Sw. v["a]dur, Dan. v[ae]dder, Goth. wi[thorn]rus a lamb, L. vitulus calf, Skr. vatsa, L. vetus old, Gr. 'e`tos year; -- originally meaning, a yearling. Cf. Veal, Veteran.] A castrated ram.

Source: Webster's Revised Unabridged Dictionary, © 1996, 1998 MICRA, Inc.